CN212218879U - Riding wheel device and agitating lorry - Google Patents

Abstract

The utility model relates to an engineering machine tool field discloses a riding wheel device and trucd mixer. The riding wheel device comprises a riding wheel shaft, a bearing sleeved outside the riding wheel shaft, a riding wheel sleeved outside the bearing, and two bearing end covers sleeved outside the riding wheel shaft and respectively located at two ends of the bearing. The utility model discloses a riding wheel device is through setting up the sealing ring between bearing and bearing end cover, and this sealing ring can be directly sealed to the regional formation between the inside lining of bearing and the overcoat, effectively avoids bearing grease to reveal to make the riding wheel device only need when the installation once the oiling can, can realize the lifelong non-maintaining of bearing.

Description

Riding wheel device and agitating lorry

Technical Field

The utility model relates to an engineering machine tool technical field specifically relates to a riding wheel device and trucd mixer including this riding wheel device.

Background

In concrete mixer trucks, the front end of the concrete mixing drum is typically fixedly supported on the trailer chassis by a riding wheel assembly that rotates with the concrete mixing drum.

As shown in fig. 1, a riding wheel device used in a current concrete mixing and transporting vehicle includes a riding wheel shaft 11 ', a bearing 12 ', a riding wheel 13 ' and a bracket 16 ', the riding wheel shaft 11 ' is fixedly mounted on the bracket 16 ', the riding wheel 13 ' is rotatably mounted on the riding wheel shaft 11 ' through the bearing 12 ', both axial ends of the bearing 12 ' are respectively provided with a bearing end cover 14 ' and an oil seal 17 ', one end of the riding wheel shaft 11 ' is provided with a nut 18 ' capable of locking the riding wheel shaft 11 ', and the other end is provided with an oil passage 111 ' and an oil cup 112 '.

In the above-mentioned riding wheel device 10 ', because the sealing effect of the oil seal 17' is limited, bearing grease leakage often occurs in the use process, and grease needs to be injected into the bearing 12 'through the oil cup 112' periodically for maintenance, so that the use cost is high, and time and labor are wasted. Furthermore, dust in the external environment and water washing the agitating drum easily enter the bearing to affect the use of the bearing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a riding wheel device and trucd mixer including this riding wheel device, the riding wheel device only need when the installation once only the oiling can, can realize the non-maintaining of lifelong of bearing.

In order to achieve the above object, an aspect of the present invention provides a supporting roller device, including supporting roller shaft, cover locate bearing, cover outside the supporting roller shaft are located supporting roller and cover outside the bearing are located supporting roller shaft just are located respectively two end caps at bearing both ends, the supporting roller device still includes a sealing structure, a sealing structure includes two sealing rings, two the sealing ring cover is located supporting roller shaft is outer just set up respectively in the both ends of bearing, every the sealing ring is in the axial of supporting roller shaft is located bearing and corresponding between the end caps with right regional formation between the inside lining of bearing and the overcoat is sealed.

Optionally, one of the inner and outer peripheral edges of the sealing ring is formed as a fixed end and the other is formed as a free end, wherein:

the fixed end is fixed on one side of the lining, and the end part of the free end is tightly propped against the corresponding end surface of the outer sleeve or the inner circumferential surface of the riding wheel; or

The fixed end is fixed on one side of the outer sleeve, and the end part of the free end is tightly propped against the corresponding end surface of the lining.

Optionally, the fixed end is clamped between the corresponding end surface of the liner and the inner end surface of the bearing end cover, or the fixed end is clamped between the corresponding end surface of the outer sleeve and the inner circumferential surface of the riding wheel.

Optionally, the free end is formed into a bent shape that enables an end thereof to be always abutted against a corresponding end surface of the jacket, a corresponding end surface of the liner, or an inner circumferential surface of the idler.

Optionally, the seal ring has a plurality of the free ends, and the free ends are abutted at intervals in a radial direction of the seal ring.

Optionally, the seal ring is made of a metallic material and/or the bearing comprises two tapered roller bearings arranged oppositely.

Optionally, the idler arrangement comprises a bracket on which the idler shaft is mounted; and/or

The riding wheel device comprises a second sealing structure which is arranged to form a seal for the area between the bearing end cover and the riding wheel.

Optionally, the second sealing structure comprises two oil seals respectively mounted on the inner sides of the two bearing end covers.

The utility model discloses another aspect provides a trucd mixer, the trucd mixer includes the churn, installs the outer circular orbit of churn and above the riding wheel device, the riding wheel device support in circular orbit makes the riding wheel with the circular orbit cooperation.

Optionally, an included angle β is formed between the axial direction of the annular rail and the horizontal direction, and the included angle β is 0 to 90 °; and/or

The ratio of the outer diameter R1 of the riding wheel to the outer diameter R2 of the annular track is 0.05-0.5.

Through the technical scheme, the utility model discloses a riding wheel device is through setting up the sealing ring between bearing and bearing end cover, and this sealing ring can be directly sealed to the regional formation between the inside lining of bearing and the overcoat, effectively avoids bearing grease to reveal to make riding wheel device only need when the installation once the oiling can, need not to punch on the riding wheel shaft and pour into grease into for the bearing regularly, can realize the lifelong non-maintaining of bearing, reduce the preparation cost and the use cost of riding wheel device.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic diagram of a prior art riding wheel assembly;

FIG. 2 is a schematic structural view of a first embodiment of the riding wheel device of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic structural view of a second embodiment of the riding wheel device of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4;

fig. 6 is a schematic structural view of a third embodiment of the riding wheel device of the invention;

fig. 7 is a schematic structural view of a fourth embodiment of the riding wheel device of the present invention, in which only the riding wheel shaft, the bearing, the riding wheel, the bearing end cap, the first sealing structure and the second sealing structure are shown;

FIG. 8 is a schematic view of the mixing drum, the circular track and the riding wheel device of the mixing truck according to the present invention after assembly;

fig. 9 is a schematic view of the riding wheel device of the present invention supported on the circular track.

Description of the reference numerals

10-riding wheel device, 11-riding wheel shaft, 12-bearing, 121-lining, 122-outer sleeve, 13-riding wheel, 131-flange, 132-matching surface, 133-abutting surface, 14-bearing end cover, 15-sealing ring, 151-fixed end, 152-free end, 16-bracket, 161-upright post, 162-base, 17-oil seal, 18-nut, 19-bearing lubricating cavity, 20-stirring barrel and 21-annular track.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, the terms "two ends" and "two sides" used herein refer to two ends and two sides along the axial direction of the idler shaft 11, without any specific description; the terms "inner" and "outer" as used herein refer to the central axis being inner, proximal to the idler shaft 11, and outer, distal from the idler shaft 11.

An aspect of the utility model provides a riding wheel device 10, locate bearing 12, the cover outside the riding wheel axle 11 including riding wheel axle 11, cover and locate bearing 12, the cover riding wheel 13 outside bearing 12 and the cover is located riding wheel axle 11 and is located two bearing end cover 14 at bearing 12 both ends respectively, and riding wheel device 10 still includes a seal structure, a seal structure includes two sealing rings 15, and two sealing ring 15 covers are located riding wheel axle 11 and are just set up respectively in the both ends of bearing 12, and every sealing ring 15 is located between bearing 12 and the corresponding bearing end cover 14 in order to form sealedly to the region between bearing 12's inside lining 121 and the overcoat 122 in the axial of riding wheel axle 11. That is, as shown in fig. 2, the left seal ring 15 is located between the left bearing end cap 14 and the left end of the bearing 12, and the right seal ring 15 is located between the right bearing end cap 14 and the right end of the bearing 12.

It should be noted that the sealing ring 15 is located between the bearing 12 and the bearing end cap 14, which means that the sealing ring 15 is located directly adjacent to the bearing 12, thereby sealing the bearing 12 well.

The utility model discloses a riding wheel device 10 is through setting up sealing ring 15 between bearing 12 and bearing end cover 14, this sealing ring 15 can be directly sealed to the regional formation between the inside lining 121 of bearing 12 and overcoat 122, effectively avoid bearing grease to reveal, thereby make riding wheel device 10 only need when the installation once the oiling can, need not to punch on riding wheel axle 11 and pour into grease into for the bearing regularly, can realize bearing 12's non-maintaining lifelong, reduce riding wheel device 10's preparation cost and use cost.

In the present invention, the sealing ring 15 may be installed in any suitable manner as long as it can seal the region between the inner liner 121 and the outer sleeve 122 of the bearing 12.

The sealing ring 15 comprises an inner circumferential edge (i.e. an annular portion close to the idler shaft 11) and an outer circumferential edge (i.e. an annular portion close to the idler 13) which are connected in the radial direction thereof, according to an embodiment of the present invention, one of the inner circumferential edge and the outer circumferential edge of the sealing ring 15 can be formed as a fixed end 151, and the other one can be formed as a free end 152. It will be appreciated that the fixed end 151 is fixedly attached and the free end 152 is not fixedly attached. The fixed end 151 may be fixed to the side of the inner liner 121, and the end of the free end 152 may be tightly abutted to the corresponding end surface of the outer casing 122 (i.e., the free end 152 of the left sealing ring 15 is tightly abutted to the left end surface of the outer casing 122, and the free end 152 of the right sealing ring 15 is tightly abutted to the right end surface of the outer casing 122) or the inner circumferential surface of the idler 13; alternatively, the fixed end 151 may be fixed to the side of the outer sleeve 122, and the end of the free end 152 may be pressed against the corresponding end surface of the lining 121 (i.e., the free end 152 of the left sealing ring 15 is pressed against the left end surface of the lining 121, and the free end 152 of the right sealing ring 15 is pressed against the right end surface of the lining 121). That is, the abutment of the fixed and free ends 152 of the fixed end 151 causes the seal ring 15 to cover the area between the inner lining 121 and the outer jacket 122 of the bearing 12. Wherein, it should be noted that, the fixed connection of stiff end 151 is not specifically referred to and adopts like welding non-detachable fixed connection mode, as long as make stiff end 151 rigid can, like the utility model discloses detachable modes such as bearing end cover, tow boat and the bearing cooperation that use among the embodiment compress tightly.

Specifically, referring to the embodiment shown in fig. 2 and 3, the fixed end 151 is sandwiched between the respective end surface of the liner 121 and the inner end surface of the bearing end cap 14, and the end of the free end 152 is tightly abutted against the respective end surface of the outer sleeve 122. Referring to the embodiment of the seal ring 15 on the left side in fig. 6, the fixed end 151 is sandwiched between the corresponding end surface of the outer sleeve 122 and the inner circumferential surface of the idler 13, and the end of the free end 152 abuts against the corresponding end surface of the liner 121. It should be noted that, in the axial direction of the idler shaft 11, one end of the bearing end cover 14 close to the bearing 12 is inner, and the other end away from the bearing 12 is outer. In addition, in order to facilitate the clamping of the fixed end 151, the inner circumferential surface of the idler 13 may be formed with a matching surface 132, the matching surface 132 may be parallel to the end surface of the outer sleeve 122, and the matching surface 132 may also limit the bearing 12.

In the above, since the free end 152 is sealed by abutting, in order to ensure that the free end 152 always abuts, the seal ring 15 is preferably made of a material having a high strength and hardness, for example, the seal ring 15 may be a metal seal ring, in which case, the fixing reliability of the fixed end 151 may be ensured, and in the case where the end of the free end 152 abutting against the end surface or the inner peripheral surface is rubbed against the end surface or the inner peripheral surface along with the rotation of the idler 13, a shallow groove may be rubbed against the end surface or the inner peripheral surface and fitted into the shallow groove, so that the end surface or the inner peripheral surface, the shallow groove, and the seal ring form a sealed sealing region, which may effectively prevent the loss of grease and the intrusion of external contaminants. More preferably, the end of the free end 152 may be formed in a relatively sharp shape to facilitate formation of the shallow groove.

In order to facilitate the contact between the end of the free end 152 and the inner circumferential surface of the idler 13, as shown in fig. 5 and 6, a contact surface 133 may be provided on the inner circumferential surface of the idler 13. The abutment surface 133 may extend in a direction perpendicular to the axial direction of the idler shaft 11.

In order to ensure that the end of the free end 152 can always be brought into close contact with the end of the jacket 122, the end of the liner 121, or the contact surface 133, as shown in fig. 3 and 5, the free end 152 may be bent so that the end can always be brought into close contact with the end surface of the jacket 122, the end surface of the liner 121, or the contact surface 133. This bend can facilitate deformation of the free end 152 and provide a force to the end of the free end 152 toward the face it abuts. As shown in fig. 2-7, the end of the free end 152 may abut against the end surface of the sheath 122, the end surface of the liner 121, or the abutment surface 133 along the axial direction of the idler shaft 11, and the end surface of the sheath 122, the end surface of the liner 121, and the abutment surface 133 are perpendicular to the axial direction of the idler shaft 11. The shape and the bent shape of the seal ring 15 are not limited to those shown in the drawings, and may be other shapes.

The utility model discloses in, in order to further improve sealed effect, sealing ring 15 can have a plurality of free ends 152, and a plurality of free ends 152 carry out the butt along radial mutual interval of sealing ring 15. Theoretically, the more free ends 152, the better the sealing effect. For example, in the embodiment shown in fig. 4 and 5, the sealing ring 15 includes a fixed end 151 sandwiched between the corresponding end surface of the lining 121 and the inner end surface of the bearing end cap 14, and two free ends 152 connected to the fixed end 151, wherein an end of one of the free ends 152 abuts against the corresponding end surface of the outer sleeve 122, and an end of the other free end 152 abuts against the abutting surface 133.

It should be noted that the two sealing rings 15 in the present invention may have the same structure (for example, as shown in fig. 2, 4 and 7, both sealing rings 15 have one free end 152) or different structures (for example, as shown in fig. 6, the left sealing ring 15 has one free end 152, and the right sealing ring 15 has two free ends 152); the same mounting method may be adopted (for example, as shown in fig. 2, 4 and 7, the fixed ends 151 of the two seal rings 15 are both sandwiched between the corresponding end surface of the lining 121 and the inner end surface of the bearing end cover 14), or different mounting methods may be adopted (for example, as shown in fig. 6, the fixed end 151 of the left seal ring 15 is sandwiched between the left end surface of the outer sleeve 122 and the inner circumferential surface of the idler 13, and the fixed end 151 of the right seal ring 15 is sandwiched between the right end surface of the lining 121 and the inner end surface of the bearing end cover 14).

The utility model discloses in, in order to further improve sealed effect, riding wheel device 10 still can include second seal structure, second seal structure sets up to forming sealedly to the region between bearing end cover 14 and the riding wheel 13. The second sealing structure can carry out coarse filtration to external dust, water and the like. Specifically, the second seal structure may include two oil seals 17 mounted on the inner sides of the two bearing end caps 14, respectively, as shown in fig. 2 to 7, for example. That is to say, compare with only installing two oil blanket 17' among the prior art, this application has additionally established first seal structure, can realize double seal. Of course, in the utility model discloses in, the second seal structure is not only limited to adopting current ordinary oil blanket, can also adopt similarly the metal seal ring of first seal structure, perhaps increases the diameter of the outer terminal surface of bearing end cover 14 in order to reduce the clearance between bearing end cover 14 and riding wheel 13.

In the present invention, the bearing 12 may be any suitable type of bearing, such as two tapered roller bearings (shown in fig. 2 and 4) mounted back-to-back, one tapered roller bearing (shown in fig. 6), and a deep groove ball bearing (shown in fig. 7).

Other structures of the riding wheel assembly 10 of the present invention will be described in detail with reference to fig. 2.

As shown in fig. 2, the riding wheel device 10 further includes a support 16, the support 16 includes a base 162 and two columns 161 extending vertically and upwardly from the left and right ends of the base 162, the two columns 161 are respectively provided with a mounting hole for mounting the riding wheel shaft 11, and the left end of the riding wheel shaft 11 sequentially passes through the two mounting holes and is locked by a nut 18 to realize fixation. Two tapered roller bearings arranged back to back are sleeved on the idler shaft 11, the idler 13 is sleeved outside the two tapered roller bearings, an annular flange 131 is formed on the inner circumferential surface of the idler 13 along the circumferential direction of the inner circumferential surface, the flange 131 is limited between the two tapered roller bearings so as to form a bearing lubricating cavity 19 between the two tapered roller bearings, and long-acting lubricating grease can be injected into the bearing lubricating cavity 19. Two bearing end covers 14 are respectively pressed on the left end and the right end of the bearing 12. The bearing 12, the two bearing end caps 14 and the idler 13 are located between the two columns 161 of the bracket 16.

The utility model discloses in, in order to realize the non-maintaining of whole riding wheel device 10, can carry out surface treatment modes such as quenching and tempering and chromium plating in order to add intensity and wear resistance to riding wheel 13 in the manufacturing process of riding wheel 13 to make riding wheel 13 reach the life-span equal with bearing 12.

The riding wheel device 10 of the utility model can be used for any suitable engineering machinery, such as a concrete mixer, a wet mixing machine in a machine-made sand production line, a belt conveyor, etc. Additionally, the utility model discloses a riding wheel device 10 specially adapted bears the great operating mode of heavy load and dynamic load.

The utility model discloses another aspect provides a mixer truck, mixer truck includes churn 20, installs ring rail 21 and riding wheel device 10 outside churn 20, and riding wheel device 10 supports in ring rail 21 and makes riding wheel 13 and ring rail 21 cooperation.

In order to ensure efficient operation of the mixing drum 20, as shown in fig. 8, an included angle β may be formed between the axial direction and the horizontal direction of the circular track 21, and the included angle β is 0-90 °. As shown in FIG. 9, the ratio of the outer diameter R1 of idler 13 to the outer diameter R2 of endless track 21 may be 0.05-0.5.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims (10)

1. A riding wheel device (10) comprises a riding wheel shaft (11), a bearing (12) sleeved outside the riding wheel shaft (11), a riding wheel (13) sleeved outside the bearing (12) and two bearing end covers (14) sleeved outside the riding wheel shaft (11) and respectively positioned at two ends of the bearing (12), the supporting roller device (10) is characterized by further comprising a first sealing structure, the first sealing structure comprises two sealing rings (15), the two sealing rings (15) are sleeved outside the supporting roller shaft (11) and are respectively arranged at two ends of the bearing (12), and each sealing ring (15) is located between the bearing (12) and the corresponding bearing end cover (14) in the axial direction of the supporting roller shaft (11) to seal an area between the lining (121) and the outer sleeve (122) of the bearing (12).

2. The idler assembly of claim 1,

one of an inner peripheral edge and an outer peripheral edge of the seal ring (15) is formed as a fixed end (151) and the other is formed as a free end (152), wherein:

the fixed end (151) is fixed on one side of the outer sleeve (122), and the end part of the free end (152) is tightly pressed against the corresponding end surface of the lining (121); or

The fixed end (151) is fixed on one side of the lining (121), and the end part of the free end (152) is tightly abutted against the corresponding end surface of the outer sleeve (122) or the inner circumferential surface of the riding wheel (13).

3. Idler device according to claim 2, wherein the fixed end (151) is sandwiched between a respective end face of the inner lining (121) and an inner end face of the bearing end cap (14), or the fixed end (151) is sandwiched between a respective end face of the outer sleeve (122) and an inner circumferential face of the idler (13).

4. Idler assembly according to claim 2, characterised in that the free end (152) is formed as a bend enabling its end to be always pressed against a corresponding end surface of the outer sleeve (122), a corresponding end surface of the lining (121) or the inner circumferential surface of the idler (13).

5. Idler device according to claim 2, wherein the sealing ring (15) has a plurality of said free ends (152), said free ends (152) abutting each other in a radial direction of the sealing ring (15) at a mutual distance.

6. The idler assembly according to any one of claims 1-5,

the sealing ring (15) is made of a metal material, and/or

The bearing (12) comprises two conical roller bearings which are oppositely arranged.

7. The idler assembly according to any one of claims 1-5,

the riding wheel device (10) comprises a bracket (16), and the riding wheel shaft (11) is arranged on the bracket (16); and/or

The idler arrangement (10) comprises a second sealing arrangement arranged to form a seal to a region between the bearing end cap (14) and the idler (13).

8. The idler assembly of claim 7 wherein said second sealing arrangement includes two oil seals (17) mounted on the inner sides of two of said bearing end caps (14), respectively.

9. Truck mixer, characterized in that it comprises a mixing drum (20), an endless track (21) mounted outside said mixing drum (20) and an idler device (10) according to any one of claims 1-8, said idler device (10) being supported on said endless track (21) and engaging said idler (13) with said endless track (21).

10. Truck mixer as in claim 9, characterized in that said annular track (21) has an angle β between the axial direction and the horizontal, this angle β being between 0 and 90 °; and/or the ratio of the outer diameter R1 of the riding wheel (13) to the outer diameter R2 of the annular track (21) is 0.05-0.5.

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